We do not lose our salvation when we sin, but we do loose our fellowship with God, we loose our closeness to him. There are consequences to all sin. But not lose of salvation. If Sara grows up to be a real hellion, she will still be your child, you may be angry with her, you may not be close to her, but she is still your child, just as we are children of God.
Becky
But if Sarah disowns me, avoids me, wants nothing to do with me?
SD